Analyzify is perfectly compatible with non-Shopify Plus stores. Purchase tracking and other user behavior metrics & reports are incredibly crucial for any store, and you will still have a majority of the events/reports with a regular plan.
The only limitation for regular Shopify stores is that they are NOT allowed to edit the checkout process. So, Google Tag Manager and all the other tracking codes will still work on every page, including the order processed page (aka. "thank you" page), but the checkout steps won’t be included.